计算合并编码多段线时级别的值 [英] Calculating value of Levels when merging encoded polylines

问题描述

这是将多个编码折线合并为一个编码多段线。

因此，通过上一个问题/发布，我可以了解如何加入多段线，但是，现在我需要了解如何为关卡做同样的事情。使用与以前相同的样本：

  41.386692，-73.475912 
 41.424822，-73.375027 
 41.428292， - 73.311173 
 41.426183，-73.254577 
 41.470168，-73.218532 
 41.498865，-73.155278 
  

$ b $第一个3级：PIP

第二个3级：PIP

所有6个级别：PIGJIP

这些是如何计算的？有没有什么方法可以计算/合并这些，而不用重新编码整个多段线？

解决方案

我相信你不会需要第3版的水平。这是改进之一。但是如果你想计算它们，那么Mark McClure的网站描述了这种方法。

This is a follow-up question to Merging multiple encoded polylines into one encoded polyline.

So through the last question/post I was able to work through finding out how to join polylines, however, now I need to figure out how to do the same for the levels. Using the same sample as before:

41.386692,-73.475912
41.424822,-73.375027
41.428292,-73.311173
41.426183,-73.254577
41.470168,-73.218532
41.498865,-73.155278

First 3 levels: PIP

Second 3 Levels: PIP

All 6 levels: PIGJIP

How are these calculated? Is there any way that I can calculate/merge these without reencoding the whole polyline?

解决方案

I'm sure you don't need levels for Version 3. That was one of the improvements. But if you want to calculate them, then Mark McClure's site describes the method.

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